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1.
以比亚迪E6、荣威E50、江淮iev3 为研究对象,利用CRUISE仿真分析NEDC_LOW和上海两种行驶工 况下燃料消耗经济性,构建基于购置成本和使用成本的纯电动汽车消费者拥有成本模型,分析纯电动汽车的市场竞争 力,并与传统汽油车进行比较。  相似文献   

2.
电动汽车仍处于产业生命周期的萌芽期,技术发展尚不成熟,市场对其前景没有一致的预期,电动汽车产业发展还存在着诸多的不确定性.本文采用<德`温特专利创新索引数据库>(DII)为数据源,对电动汽车领域的核心专利进行专利共引分析,采用层次聚类和多维尺度分析等文献计量分析方法对1990~2007年期间的电动汽车的核心专利技术进行挖掘,分析不同阶段电动汽车产业的核心技术分布情况及其演变特点,为国家有关部门和产学研把握电动汽车产业发展的技术重点,选择正确的研发方向,优化配置创新资源,提高创新效率和抢占技术制高点提供决策依据.  相似文献   

3.
杨娟 《大观周刊》2013,(8):334-334
由于在节能减排、能源安全和可持续发展等方面的重要战略意义,在相关部门的积极推动下。电动汽车的普及已成为一种必然趋势。但大规模电动汽车的无序接入势必会对电力系;统规划运行产生不可忽视的影响,涉及发、输、配等各个环节。充电负荷的可控性和V2G技术的发展为减小影响提供了解决思路叠在合理的市场机削引导下,配合相应的智能充电策略,可以确保电力系统的安全稳定运行和电动汽车的健康快速发展。在国内外电动汽年充电负荷建模研究现状的基础上,介绍了电动汽车充电负荷大规模接入带来的影响及其控制措施,并展望了未来可能的研究方向。  相似文献   

4.
儿童营销和消费研究权威麦克尼尔指出:儿童的背后站着三个市场——作为直接消费者的市场,作为影响者的市场,以及作为未来消费者的市场。电视广告能在儿童中产生三种行为:购买、纠缠和反社会行为。消费者意识在儿童出生的第一年就开始萌芽了.之后迅速成长.到了100个月,儿童已经成为一个真正的消费者。  相似文献   

5.
介绍低速电动汽车的产业发展现状,提出实现市场对资源配置的决定性作用,促进资源配置效率提高, 要求政府为低速电动车市场配置资源提供必备的基础条件,维护公平竞争的市场秩序,促进电动汽车产业多元化发 展。欧美等发达国家针对低速电动车制定的管理措施为我国提供3 点启示:(1)实施分类管理;(2)建立技术标准;(3)完 善监管机制  相似文献   

6.
深入市场,比竞争对手更了解消费者需求和消费者特征是商家获得三四线市场的关键之道。作为未来市场中坚的三四级市场众所周知,即便是在金融海啸席卷全球的年代,中国经济也保持了稳定增长。那么经济的持续增长到  相似文献   

7.
综述国内外电动汽车产业数据库建设现状,指出我国电动汽车产业数据库建设上的不足,研究电动汽车 产业数据库建设的需求和数据源问题。基于电动汽车产业的系统性和数据库的建设流程,从车辆和应用环境两个维度 构建了电动汽车产业数据库内容的“VP+ISBCG”框架,最后对电动汽车数据库的功能和应用进行分析。全文研究了电 动汽车产业数据库建设中所涉及的问题及应用前景,为电动汽车产业数据库平台的建设提供了科学的思路和系统理论。  相似文献   

8.
在传统的网购市场环境下,网购以"只有想不到、没有买不到"的海量商品,和超乎想象的低价赢得了消费者,而对于网购的这种特色,消费者只能被动地接受,而无法主动选择。在这种情况下,商家只是分散在互联网各个地方,各自争夺着消费者,重复耗费着资源。实际上从消费者购物习惯来讲,消费者更倾向于到专业市场购买商品。  相似文献   

9.
茆晓明 《视听界》2010,(1):50-52
营销学上的产品定位主要包含两个方面:一是目标市场定位,简称市场定位,是指企业对目标消费者或目标消费者市场的选择;一是产品定位,是指企业用什么样的产品来满足目标消费者或目标消费市场的需求。相应于广播频率而言,这两个方面内容则分别是受众市场定位(通常指两个市场——听众市场和广告市场)和节目内容/类型定位。  相似文献   

10.
中国正在跨入一个"小众"时代,消费者和市场在不断地细分,各种媒体也都在根据市场环境和消费者的变化而不断地走向专业化,不断地细分市场,寻找自己的目标群体.同时,数字传播技术的冲击也引发了媒体的"碎片化",消费者原有的媒介接触时间、接触习惯完全被打破.  相似文献   

11.
This article surveys a sample of sources of the information about Romania available to British readers in nineteenth century British newspapers and periodicals. It traces first contacts between the Romanian lands and Britain after the union of the principalities of Wallachia and Moldavia in 1859, then after their independence from the Ottoman Empire. The article highlights an increased Romanian interest in British periodicals, which reported and reviewed Romanian literature and scholarship. The article concludes that nineteenth century British newspapers and periodicals offer a great variety and wealth of new material previously unavailable or unknown to researchers. It also states that only a portion of a large quantity of this material has been indexed and is therefore available via the bibliographic sources mentioned in the article. The author argues for the need of a new and updated British-Romanian bibliography, which can draw on new online resources offering access to thousands of new newspapers and periodical records.  相似文献   

12.
ABSTRACT

The paper looks at library approval plans for material published in Slavic, East European, and Eurasian countries from the selector's point of view. Reasons why a selector would or would not want one are examined. Success with approval plans requires monitoring receipts, as well as good and ongoing communication among the selector, the acquistions department, and the vendor. A preliminary list of vendors offering approval plans for the countries of the region appears in the appendix.  相似文献   

13.
为进一步提升武汉科技信息共享服务平台使用效率,本文从平台资源建设、资源应用、供需对接方式和供需特点等方面分析了武汉科技信息资源服务现状;基于需求和利用的角度,结合平台管理实践和走访用户、问卷调查等研究方法,从信息资源需求主体和平台自身建设管理两个维度,找出制约科技资源供需对接的主要因素;以市场化和制度化为创新理念,从政策创新、机制创新、市场化服务、环境营造、人才培养等方面提出平台建设由“资源集聚”向“需求导向”转变的对策建议.  相似文献   

14.
ABSTRACT

The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed.  相似文献   

15.
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire.  相似文献   

16.
在分析文献在不同研究阶段用词时间特征的倾向性基础上,提出一种基于主题模型的研究发展阶段识别方法。重点阐述该方法的构建过程,包括时间特征抽取、发展阶段界定、主题冷热变化分析等步骤。为验证该方法的有效性,针对词频统计法和主题模型方法在主题演化分析中的效果进行比较分析。结果表明,该方法能在识别主题热点和发展趋势的同时,有效地区分不同主题所反映的研究发展阶段。  相似文献   

17.
ABSTRACT

In today's current political environment raising support for millage renewals, bond campaigns or even millage continuations for public libraries is affected by national politics, and a tendency towards tax aversion on principle across the country. The lessons we can learn from the governing boards of small and rural public libraries are worth raising up to a greater national consciousness. Board governance, community consciousness, and facilities management are clear and logical tools that elected boards of public libraries can use to politick for support of libraries.  相似文献   

18.
Chromebooks and the G Suite group of products, like Google Search, Gmail, and Google Docs, have rapidly expanded in American schools during the past 5 years. The impact of one-to-one Chromebook devices and the pervasive use of Google's software products in American education cannot be overstated. This article explores some of the influences of these products on research, based on the experiences of a librarian and technology coordinator at an elementary education level. The author has several suggestions for effective research with these products in mind.  相似文献   

19.
Library historians can learn a great deal from studying the gender of authorship and institutional affiliation of a scholarly journal. The focus of this study is to examine these two aspects of journal production in library history to see who is producing published research in this field. Twenty-three years of Libraries & Culture were chosen as the target volumes. The study reveals that more men than women published in library history as well as locating which institutions were represented. This type of information is usedful to the library historian engaged in the analysis of published scholarship, and more generally to scholars with an interest in patterns of literature production in fields closely related to the social and behavioral sciences.  相似文献   

20.
ABSTRACT

The history of the almanac in Croatia is reconstructed through primary research in bibliographic and archival sources. The almanac is a vehicle for knowledge communication in informal contexts, engaging both oral tradition and literary forms traceable to medieval literacy and ways of structuring knowledge. The history of the almanac in Croatia reflects the changing context of the book trade, literacy, and the evolution of language. Four main stages are identified: (1) the beginning of the annual almanac in the seventeenth century; astrological almanacs reflecting the sensibility of the Baroque period; (2) the Enlightenment's stimulation of almanac publishing in the spirit of contemporary secular reforms in agriculture and education; (3) nineteenth-and twentieth-century almanac trade, showing complex and overlapping networks for the production, distribution and appropriation of printed almanacs;(4) roughly the end of World War II, when the almanac slowly moved out of the role of a popular mass medium and into specialized niches represented by regional, diaspora, and religious almanacs.  相似文献   

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